KlausDev

Services

Technical software development — freelance and part-time. I build production systems, not prototypes.

01

Full-Stack Web Development

End-to-end application development with Next.js, TypeScript, and Node.js. Server-side rendered pages, REST APIs, database design, and Vercel deployment. From internal tools to public-facing products.

Next.jsTypeScriptReactNode.jsTailwind CSSVercel

Deliverables

  • →Next.js application (SSR/SSG/ISR)
  • →TypeScript frontend — React, Tailwind CSS
  • →Node.js / Express backend API
  • →Database schema and migration
  • →Vercel deployment and CI setup
02

Backend APIs & Automation

REST API design and implementation, background service platforms, scheduled jobs, email parsing pipelines, and third-party API integrations. Built to run reliably on AWS EC2 with PM2 process management.

Node.jsExpress.jsPythonFastAPIAWS EC2cronPM2

Deliverables

  • →RESTful API with Express.js or FastAPI
  • →Background service with cron scheduling
  • →Email parsing and routing pipeline
  • →Third-party API integration
  • →AWS EC2 deployment with PM2
03

CRM Platforms & Business Systems

Custom CRM builds with role-based access, deal pipelines, lead management, and document generation. Bitrix24 On-Premise deployment and customisation with REST API integration.

Next.jsPostgreSQLBitrix24PHPMySQLREST API

Deliverables

  • →Custom CRM with role-based access
  • →Multi-stage deal pipeline
  • →Lead management and routing
  • →Document / contract generator
  • →Bitrix24 deployment and module development
04

Real Estate Technology

Property portals with SSR, lead capture systems, admin panels, and integration with Dubai property portals — Property Finder, Bayut, and Dubizzle. DLD/EJARI compliance document automation.

Next.jsNode.jsMySQLBitrix24PuppeteerVercel

Deliverables

  • →SSR property portal with SEO
  • →Lead capture and CRM sync
  • →Portal fan-out (PF / Bayut / Dubizzle)
  • →Internal admin panel for listings
  • →DLD/EJARI compliance document generation
05

Third-Party Integrations

API integrations connecting your systems to external platforms — payment gateways, CRM tools, communication services, and data sources. Webhook handling, data normalisation, and sync pipelines.

Node.jsREST APIsWebhooksTypeScript

Deliverables

  • →API integration with external service
  • →Webhook endpoint and event routing
  • →Data normalisation layer
  • →Sync pipeline with error handling
  • →Documentation and test suite

How I Work

01

Discovery

We discuss what you need to build, what already exists, and what the real constraint is — whether that's timeline, budget, or technical complexity.

02

Scope & Plan

I put together a clear scope of work: what gets built, what stack makes sense, rough timeline, and what's out of scope so there are no surprises.

03

Build

I build in the open — regular updates, early previews, and clear communication when something unexpected comes up. No black-box development.

04

Handoff

Deployed, tested, and documented. I stay available for questions after handoff and can continue on a retainer basis for ongoing work.

Engagement Details

Availability

Part-time & Freelance

Currently employed full-time in Dubai

Location

Dubai, UAE

Remote-first, worldwide clients

Project Size

Small to mid-scale

Focused work, not enterprise RFPs

Have a project in mind?

Use the terminal on the Let's Talk page to send me a message, or reach out directly on LinkedIn.